1. Department of Social Preventive Medical Sciences, Center for Preventive Medical Sciences, Chiba University , Chiba , Japan
2. Department of Community General Support, Hasegawa Hospital , Chiba , Japan
3. Department of Cardiology, Chiba University Hospital , Chiba , Japan
4. Institute of Health and Sport Sciences, University of Tsukuba , Tokyo , Japan
5. Department of Health Promotion, National Institute of Public Health , Saitama , Japan
6. Center for Well-Being Society, Nihon Fukushi University , Aichi , Japan
7. Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University , Osaka , Japan
8. Department of Gerontological Evaluation, Center for Gerontology and Social Science, Research Institute, National Center for Geriatrics and Gerontology , Aichi , Japan
9. Department of Epidemiology, Boston University School of Public Health , Boston, Massachusetts , USA